Grindmaster 115 and 250 Series
Coffee Grinders
Operation and Instruction Manual
for
Models 115A, 115AB, 250, 250A, 250AB, 250-3A,
250RH-2 & 250RH-3
Table of Contents
Installation Instructions ..................................2
Set-up Procedures..........................................2
How to Operate ............................................2
Timer Adjustment ..........................................3
Grind Selector™ ............................................4
Coffee Grind Profile, Grind Adjustment ........5
Current, Protection, Circuit Breaker................5
Lubrication ....................................................5
Cleaning Instructions ....................................6
Model 250
Model 250RH-2
Removal and Reinstallation
of Upper Hopper Assembly............................6
Shear Disc Replacement ................................7
Troubleshooting Guide................................8-9
Exploded Views ......................................10-18
Wiring Diagrams ....................................19-22
Prior authorization must be obtained from
Grindmaster Corporation for all warranty claims.
Model 115
Grindmaster Corporation™
4003 Collins Lane
Louisville, Kentucky 40245 USA
(502) 425-4776
(800) 695-4500 (USA & Canada only)
(800) 568-5715 (Technical Service)
FAX (502) 425-4664
© Grindmaster Corporation, 1998
Printed in the USA
0108 Form # GR-373-04
Part# 85358
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Installation Instructions
For Models 115A, 115AB, 250, 250A, 250AB, & 250-3A:
1. Please read this manual before operating the grinder.
2. Carefully remove grinder from carton.
3. Place grinder in position on shelf, counter or flat surface.
4. Plug grinder into 120V, 15A, grounded, electrical outlet. Do not use an extension cord.
5. Grind a small amount of whole bean coffee following operating instructions as described in this manual.
6. If there is any problem, consult the Troubleshooting Guide in this manual and also on the back of your grinder.
7. If you still cannot correct a problem, call Grindmaster Corporation’s Technical Service Department for help,
(502) 425-4776 or (800) 695-4500 (USA & Canada only) 8 AM - 6 PM EST.
For Models 250RH-2 & 250RH-3:
1. Please read this manual before operating the grinder.
2. Remove the flat cardboard insert. Remove the cardboard insert on top of the
grinder. Next, remove the small box next to the grinder (hopper enclosed).
Next, remove corner supports and then remove the grinder. Lastly, remove the
second hopper.
3. Place grinder in position on shelf, counter or flat surface.
4. Plug grinder into 120V, 15A, grounded, electrical outlet. Do not use an
extension cord.
5. Fill hoppers with whole bean coffee and place on grinder. Make sure the base
of each hopper is seated in its designated area (see Figure A). See
“Removal and Reinstallation of Hopper Assembly” section on page 6 for
detailed instructions.
6. Grind a small amount of whole bean coffee following operating instructions as
described in this manual.
incorrect
correct
7. If there is any problem, consult the Troubleshooting Guide in this manual and
also on the back of your grinder.
8. If you still cannot correct a problem, call Grindmaster Corporation’s Technical
Service Department for help:
(502) 425-4776 or (800) 695-4500 (USA & Canada only) 8 AM - 6 PM EST.
Figure A
Instructions
Your new coffee grinder is easy to operate and maintain. Before you place it in service, please have all personnel
familiarize themselves with these instructions; then keep this manual in a convenient place for ready reference.
Set-up Procedures
1. You, the user, must determine the quantity of coffee you want to dispense as various types of coffee and
brewing equipment require different quantities to obtain a quality cup of fresh ground, fresh brewed coffee.
Note: Because of the inherent properties of some decaffeinated coffee, it may be necessary to dispense a slightly greater
amount to achieve the desired level of flavor extraction as in regular coffee. This should be evaluated based on the coffee
you use as well as the brewing equipment used.
2. Adjust the timer inside the grinder if necessary, to dispense the desired weight of ground coffee (see Timer Adjustment
Section on page 3). All grinders are factory set to deliver approximately 2 ounces of ground coffee. This weight is
approximate, as the density of all coffee beans is not the same. The only way to ensure the desired portion is being
dispensed is to weigh the coffee after it has been ground.
3. The grind texture can be adjusted, if necessary, to a finer or coarser grind (see “Grind Adjustment” section on page 5).
The grind is factory set to deliver a standard autodrip grind.
How to Operate
1. Fill the hopper with the appropriate amount of whole bean coffee.
250RH Models: Place full hoppers on machine making sure the base of each hopper is seated in designated area.
(Refer to Figure A)
2. Place the brew basket with coffee filter on rails (or basket arms).
3. Choose the type of coffee you wish to grind by pressing the rocker selection switch.
4. Push the start button on the front of the grinder.
5. When grinder stops, remove the brew basket.
115 & 250 Series Coffee Grinders
Page 2
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Timer Adjustment
The timer is preset at the factory, but should adjustments be required, follow the instructions below to set the grind times.
Note: The grinder power must remain ON for timer adjustments.
AMOUNT
DESIRED
(OZ.)
TIME
SETTING
(SECONDS)
AMOUNT
DESIRED
(OZ.)
TIME
SETTING
(SECONDS)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
5.0
1.0-1.3
2.1-2.6
3.2-3.9
4.3-5.3
5.4-6.6
6.5-7.9
7.5-9.2
8.6-10.5
10.8-13.2
6
7
13.0-15.8
15.2-18.4
17.4-21.1
19.5-23.7
21.7-26.3
26.1-31.6
30.5-36.9
34.8-42.1
39.2-45.0
8
9
10
12
14
16
18
Digital Grinder Timer Adjustments (All Models)
1. To access timer, remove the timer cover by removing the mounting screws and pulling the cover away from the casing.
2. To light up the display on the board and check the time setting, depress either one of the two square buttons located next to
the display one time.
3. To change the displayed setting, press and hold either the left or right square button until the desired setting is reached. The
left button lowers the displayed value; the right button increases the displayed value. The time values are set in seconds and
tenths of a second.
4. Refer to chart above for approximate timer settings.
Note: For accuracy you must weigh the coffee and make appropriate adjustments.
5. In order to store this desired value you must press the grinder start switch once.
Note: If start switch is not pushed, the last value stored will be used when you return to grinding mode.
6. Once the timer is adjusted, reinstall the timer cover.
Page 3
115 & 250 Series Coffee Grinders
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Grind Selector™
For Models 115AB and 250AB:
Models equipped with a Grind Selector™ are designated with a “B” at the end of the model number (Model 115AB & 250AB). If
your grinder is equipped with a Grind Selector™, refer to the following information:
The Grind Selector™ allows you to set the grinder to coarse or fine on any of the 250AB four grind selections:
regular small, regular large, decaf small, or decaf large.
The following are some recommended use conditions:
Coarser Settings
Regular Settings
Larger portions - 8 oz or more
(urns)
Decaffeinated coffee
Smaller portions - 7 oz. or less
(bottle brewers or airpots)
Regular coffee
The fine grind setting on this grinder has been pre-set at the factory to deliver coffee ground to normal drip
specifications. Should you wish to make an adjustment please follow these steps:
To Adjust the Fine Grind
For Models 115AB and 250AB:
Fine grind
adjustment
screw
Tools Required: Adjustable Wrench, Phillips Screw Driver, Large Blade Screwdriver
1. Unplug grinder.
2. Remove upper front plate.
3. Loosen the fine grind adjusting screw lock nut (see Figure B).
4. Hold solenoid shut while turning adjusting screw clockwise to
make the grind finer, counter-clockwise to make the grind coarser
Figure B: Fine Grind Adjustment
(see Figure B). We recommend that you do not turn the
adjusting screw more than two notches on the scale before
testing the new grind setting.
NOTE: Be sure that when adjusting the grind that you do not adjust too fine, causing the burrs to touch each other (a sound of
metal scraping metal). This could cause damage to the burrs or motor.
5. After the adjustment has been made, tighten adjusting screw lock nut. Do not allow the fine grind adjusting screw to expose
more than three threads on the outer side of the arm or it could loosen during operation.
6. Assemble front plate to front of the grinder.
To Adjust the Coarse Grind
For Models 115AB and 250AB:
Coarse grind
adjustment screw
Tools Required: Adjustable Wrench, Phillips Screw Driver, Large Blade Screwdriver
1. Unplug grinder.
2. Remove upper front plate.
3. Loosen the fine grind adjusting screw lock nut (see Figure C).
4. Pull the solenoid plunger toward you until it contacts the coarse
grind adjusting screw (see Figure C). Then turn the adjusting
screw clockwise to make the grind finer, counter-clockwise to
Figure C: Coarse Grind Adjustment
make the grind coarser. We do not recommend that you turn the
adjusting screw more than one and a half turns before testing the new grind setting.
5. After the adjustment has been made, tighten the adjusting screw lock nut.
6. Assemble front plate to front of grinder.
115 & 250 Series Coffee Grinders
Page 4
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Coffee Grind Profile
Before shipment, this grinder has been tested with coffee and has been accurately adjusted to deliver a
standard autodrip grind.
The Grinding Burrs are made of an extremely hard and wear resistant alloy. From time to time, grind
adjustments (see instructions below) may be necessary as the burrs wear. If the grind runs coarser than
expected after normal adjustment and the grind time has increased, the burrs may have excess wear and should be
replaced. The burrs are warranted for 3 years or 30,000 pounds of coffee. See your warranty for details. New burrs should
always be installed as a pair, never one or the other, as they are accurately ground and lapped in pairs. Old burrs cannot be
resharpened.
Grind Adjustment
For Models 115A, 250, 250A, 250RH-2, 250RH-3
Tools Required: Phillips and Large Blade Screwdrivers, Pliers
In order to adjust the grind follow these steps: (see Figure D)
Adjusting Screw
Lock Nut
(86340)
Adjusting Screw
(86341)
1. Remove Upper Front Plate by removing the four screws in the corners.
2. Loosen Adjusting Screw Lock Nut by turning counter clockwise.
3. Turn slotted Adjusting Screw clockwise to make grind finer or
counter-clockwise to make grind coarser. Generally a 1/8 to 1/4 turn
will provide the desired adjustment.
Note: Use dial on grinder cap as reference. Do not turn more than
one notch before testing new Grind Adjustment.
Grinder Cap
(87131)
4. After adjustment has been made, tighten Adjusting Screw Lock Nut.
Figure D: Grind Adjustment
5. To visually inspect grind adjustment, test grind a small portion of coffee
and re-adjust if necessary.
Note: Adjusting the grind may alter the portion of coffee dispensed. After grind adjustment,
weigh portion and adjust, if necessary (see “How to Adjust the Portion”).
Current
It is absolutely essential that full voltage and amperage always be available as it takes full power to grind
coffee. NEVER connect to an overloaded line or a two or three way plug, otherwise serious damage to the motor may result.
Do not use an extension cord.
Protection
This grinder is equipped with both a circuit breaker and a shear disc to protect motor and burrs if a foreign object, such as a
nail or rock, gets into the coffee.
Circuit Breaker
This grinder is equipped with a circuit breaker to protect the motor from overloading. When the circuit breaker operates, the
reset button will pop out approximately 1/4” which cuts off the power to the grinder. The reset button is located above the
power cord on the back of the grinder. To reset the circuit breaker, push the reset button in. You will hear a click as it resets.
If the grinder does not operate after resetting the circuit breaker, there may be an obstruction in the grinding mechanism that
is stalling the motor. In this case, the Grinder Head should be cleaned out as described in the Shear Disc Replacement
section of this manual.
Lubrication
All bearings have been oiled for life. No further oiling is necessary.
Page 5
115 & 250 Series Coffee Grinders
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Cleaning Instructions
The outside of the machine can be cleaned with a damp cloth or common household polishing wax. Grinding parts should
be cleaned with a stiff brush or dry cloth. Do Not Use Water. See “Shear Disc Replacement” for instructions on assembling
and disassembling of grinder parts. Before reassembling, wipe motor shaft with 2 or 3 drops of common household lubricat-
ing oil in the area of feedworm engagement to make assembly easier.
For Models 250RH-2, 250RH-3:
Regular usage of the coffee hoppers will cause oils to accumulate on the inner surface, requiring occasional cleaning.
1. Remove hopper from grinder and empty all beans.
2. Use a soft, damp cloth with a small amount of liquid soap and clean hopper. Use a clean, damp cloth to remove the
soap residue. Do not immerse or fill hopper with water.
3. Allow hopper to completely air dry before refilling with beans.
4. Once the hopper is dry, refill with whole bean coffee, cover and replace on grinder.
Model 250
shipping bracket
Shipping Bracket Removal
NOTE: Shipping bracket must be removed prior to removal of
The bracket may be
upper hopper assembly.
left on grinder, but
must be removed
prior to servicing.
Models 250, 250A and 250AB are equipped with shipping bracket.
Remove bracket prior to installation. (see Figure E)
Tools Required: 1 Phillips screwdriver.
1. Using the Phillips screwdriver, remove the screws and the bracket
located at the back of the grinder.
2. Do not discard the screws and bracket. The bracket should be re-installed
on the grinder prior to transporting or shipping.
Figure E: Shipping Bracket Removal
Removal and Reinstallation of Hopper Assembly
For Models 250, 250A, 250AB, 250-3A:
1. Remove Upper Front Plate by removing the four screws in the corners
(Shipping bracket must be removed prior to removal of upper
hopper assembly. See instructions and diagram above.)
2. Lift Upper Hopper Assembly while rotating the Assembly slightly
upward (see Figure F).
3. Pull the Assembly forward, toward front of unit and out.
4. To reinstall hopper, ensure the Drive Pins are in vertical position.
(see Figure G)
5. Ensure that Drive Links are in horizontal position.
6. Insert the rear slots of the Upper Hopper Assembly into the rear tabs
of the motor bracket.
7. Rotate assembly downward.
Figure F: Upper Hopper Assembly
Removal and Reinstallation
8. Reassemble Upper Front Plate.
9. Put the (4) screws back into Upper Front Plate and tighten.
For Models 250RH-2, 250RH-3:
1. To remove hoppers, grasp hopper by handle and lift up
approximately 1/4” and pull hopper back and out of
grinder. The bottom bean shut off valve will close
automatically, preventing spillage of beans.
2. Once hopper is removed, it can be refilled or cleaned if necessary.
3. To reinstall hopper, grab by handle and set bottom back of hopper on
left or right side of grinder, making sure that the drive link is properly
oriented (see Figure G).
4. Push hopper all the way back until it settles in it’s designated space (see Figure A).
Figure G: Positioning of the
Drive Pins and Drive Links
NOTE: Hopper must be in place in order for that side of the grinder to operate.
115 & 250 Series Coffee Grinders
Page 6
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Gasket, Hopper Foam
(88211)
Grind Head
(84171S)
Thrust Collar
(86304)
Motor
(86419)
Burr Set
(85281W)
Revolving
Burr
Tension Spring
(86118)
Shear Disc
(86123)
Decal, Coarse-Fine
(84884)
Shear Cap
(86355)
Adjusting Nut
(86340)
Nut
(86864)
Machined Spout (86218)
Screw
(86812)
Deflector (86220)
Screw (86217)
Screw
(86148)
Shear Drive
(86154)
Feedworm
(85185K)
Spring, Chaff Mixing
(86146)
Grind Cap
(87131)
Gasket, Portioner to Head
(71419)
Adjusting Screw
(86341)
Thumb Screw
(86819)
Bearing, Adjusting
(86140)
Figure H: Motor Assembly
Shear Disc Replacement
If the motor should run and no coffee is dispensed, the shear disc release may have operated. Should this occur,
perform the following operations in the sequence given (see Figure H).
Tools Required: Phillips Head Screwdriver and Pliers
1. Unplug machine.
2. Remove the Upper Front Plate of the grinder to provide access to the grinder mechanism.
3. Remove the Grind Cap by taking out the 2 Thumb Screws.
4. Pull out the Revolving Burr and Feedworm Assembly. Clean out the Grinder Head, removing all coffee particles
from inside of the Grinder Head and the Grinder Cap so that it can be reset properly.
5. Check that no obstruction has been caught on the surface of the teeth of either burr.
6. Remove the Shear Cap and broken pieces of the Shear Disc. You are now ready to reassemble the grinder
mechanism.
7. Slide the Burr and Feedworm Assembly back onto the Motor Shaft making certain that the tongue of the shaft
engages the slot in the Shear Drive.
8. Insert a new Shear Disc by aligning the slot in the Shear Drive with the slot in the hub of the Feedworm.
9. Reassemble the Shear Cap and Grinder Cap. Make certain the Grinder Cap is screwed on tight and is sealed
properly against the head, not angled or mis-aligned. Otherwise a proper grind cannot be obtained.
10. Reassemble the Upper Front Plate. Your grinder is now ready to grind.
Page 7
115 & 250 Series Coffee Grinders
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Troubleshooting Guide
The following procedures must be performed by a qualified service technician.
CAUTION: Unplug the machine before cleaning or servicing the unit.
Problem
Possible Cause
Solution
Grinder will not start when START
button is pushed
• Plug not in outlet properly
• No power to outlet
• Install plug in outlet
• Check outlet with lamp or radio to verify
outlet has power.
• Circuit breaker has tripped
• Reset circuit breaker by pushing in reset
button until you hear a click
Grinder runs or hums but no
coffee is dispensed
• Shear disc is broken
• Replace shear disc. See “Shear Disc
Replacement” section or instructions on
inside of upper front plate.
• Obstruction in opening to grinding
chamber
• Remove hopper and clear obstructions.
• Auger has stalled (Models 250,
250RH-2 & 250RH-3 only).
• Clean auger
250A
• 250RH Models: Hoppers not properly in • Make sure hoppers are seated in their
place
allocated area
Excessive amount of chaff flying
about
• Defective chaff mixer spring
• If bent, broken, or missing,
replace spring.
• If stuck open with coffee, clean coffee to
free spring
• Static electricity
• Tighten all nuts, bolts, and screws and
verify outlet is grounded.
Quantity of coffee dispensed each
throw is not the same
• Auger stalls (Models 250, 250A,
250RH-2, and 250RH-3 only)
• Timer delay is not working or running
long enough
• Refer to problem as listed below in this
Troubleshooting Guide.
• See “Timer Adjustment” section
• Check the length of time the grinder
runs
• Defective timer
• If time varies more than plus or minus
1%, replace timer.
Knobs do not operate smoothly
Auger does not turn
• Coffee beans or bean dust may have
clogged carrier
• With machine unplugged, clean carrier
• Coffee beans or bean dust may have
jammed auger
• 250RH Models: Hopper not properly
seated
• With machine unplugged, clean auger
opening
• Make sure hopper is seated in its
designated area (see Figure A)
Auger will not operate
• Motor or link is binding
• Check all alignment of link and motor.
Check tightness of motor mounting
screws.
• Auger motor has burned out
• Wiring harness to motor is loose
• Replace motor
• With machine unplugged, check to see
if wires are connected to motor
• Make sure hopper is seated in its
designated area (see Figure A)
• 250RH Models: Hopper not properly
seated
Circuit breaker continuously trips
• Insufficient current due to use of
extension cord
• Plug unit directly into outlet. Do not use
extension cord.
• Insufficient current due to overloaded
line
• Designate single line for grinder. Do not
use multi-outlet box.
• Grind setting needs adjustment
• Adjust grind to coarser setting (see
“Grind Adjustment” section)
continued on next page
115 & 250 Series Coffee Grinders
Page 8
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Troubleshooting Guide for Grind Selector™ Mechanism
(Models 115AB and 250AB)
The following procedures must be performed by a qualified service technician.
Problem
Possible Cause
Solution
Loud grating noise
• Burrs are touching each other on fine
grind setting
• Readjust fine grind setting, see “To
Adjust Fine Grind” section
Rumbling noise
• Thrust bearing rotating inside flange
bearing
• Replace thrust bearing and shear cap
Chattering or buzzing noise
• Solenoid may have failed to seat or
close fully (Models 115AB &
250AB only)
• Check alignment of solenoid and
shift arm
• Also check the tightness of the solenoid
mounting screws
Loud vibration noise during grinding
• Cotter pin in the thumb screw linkage
• Attempt to spread flanges of cotter pin
or replace cotter pin
when Grind Selector™ is not activated may be vibrating
Grind Selector™ fails to activate
• Wiring harness loose
• WITH MACHINE UNPLUGGED, check
wiring harness connections to see if
they are secure on the timer terminals
• Solenoid has burned out (Models 115AB • Replace solenoid
& 250AB only)
If you still need help, call our Service Department at (502) 425-4776 or (800) 695-4500 (USA & Canada only)
(Monday through Friday 8am-6pm EST) or an authorized service center in your area. Please have the model
and serial number ready so that accurate information can be given.
Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all
warranty claims.
Page 9
115 & 250 Series Coffee Grinders
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Models 115A, 115AB, 250, 250A, 250AB & 250-3A Exploded Views
(refer to pages 11-14)
115 & 250 Series Coffee Grinders
Page 10
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Exploded View Parts List - 115V
Models 115A, 115AB, 250, 250A, 250AB & 250-3A
Item No. Description
115A
115AB
250
250A
250AB
250-3A
1
2
3
4
5
6
7
HARNESS, 115/250 A & AB
86037
86037
86037
86125
86121
86034
86309
86863
89103
86037
86125
86117
86034
86309
86863
89103
86037
86125
86117
86034
86309
86863
89103
86037
86125
86117
86034
86309
86863
89103
HARNESS, 250 SERIES DIGITAL AUGER
HARNESS, DIGITAL SWITCH
FOOT, RUBBER 100/250
BASE
BRACKET, TINNERMAN ANGLE
250 LID ASSEMBLY
86122
86034
86309
86863
86122
86034
86309
86863
8
9
SCREW, #8 X 3/8 PH PN SMS T/B 410 SS
LID, BACK SS
SCREW, 6-32 X 1/4 PH PN HD
LID, FRONT SS
NUT, 6-32 ACORN LOCK
HINGE, PLATED
PARTITION, HOPPER
SCREW, 8-32 1/2 SL BD HD NYLON
NUT, 8-32 NYLON LOCK
SCREW, #8 X 3/8 PH PN SMS T/B 410 SS
HOPPER
WINDOW, HOPPER
HOPPER, SUPPORT
HOPPER
FRONT HOPPER SUPPORT
GASKET, HOPPER
SCREW, 8-32 X 3/8" HEX PEM
LINK, DRIVE
WASHER, NYLON
HOPPER, AUGER W/ SPOUT
ADAPTER, DRIVE
SPRING, AUGER
FUNNEL, AUGER
MOTOR, AUGER 115V
BRACKET, MOTOR
GASKET, HOPPER
NUT, TINNERMAN 1/4 - 20
MOTOR, 1/2HP 115V
SCREW, 8-32 X 3/8 PH TR HD M/S 410 SS
HEAD, GRIND
COLLAR, THRUST
SPRING, TENSION
BURR (SET)
SCREW, #10-32 X 5/16
FEEDWORM
DRIVE, SHEAR
SHEAR DISC
COVER, SHEAR
BEARING, ADJUSTING
GRIND, ADJUST PIN
GRIND, CAP
NUT, 5/8-18 BRASS ADJUST SCREW
SCREW, 5/16-18 X 1 THUMB T/S ZINC
GRIND SHIFT ASSEMBLY
SCREW, 8-32 X 5/8 PH TR M/S ZINC
NUT, 8-32 KEPS ZINC PLATED
BRACKET, COARSE STOP
SCREW, GRIND ADJUST 5/8-18 X 3/8
89113
86013
86801
86014
86848
86316
89113
86013
86801
86014
86848
86316
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
86041
86087
86086
86041
86087
86086
86041
86087
86086
86041
86087
86086
89114
86010K
86102
86008
86192
86196K
86228
89114
86010K
86102
86008
86192
86196K
86228
86010K
83152
86010K
83152
86010K
83152
86010K
83152
83182
83368
83141-01
83150
80019
86046
83134
86050
86042-01
83081
86864
86419K
82097
84171S
86304
86118
83182
83368
83141-01
83150
80019
86046
83134
86050
86042-01
83081
86864
86419K
82097
84171S
86304
86118
83182
83368
83141-01
83150
80019
86046
83134
86050
86042-01
83081
86864
83182
83368
83141-01
83150
80019
86046
83134
86050
86042-01
83081
86864
86419K
82097
84171S
86304
86118
86864
86419K
82097
84171S
86304
86118
85281WK
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
86864
86419K
82097
84171S
86304
86118
85281WK
86812
85185T
86154
86123
86355
86140
86419K
82097
84171S
86304
86118
85281WK
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
85281WK
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
85281WK
86812
85185T
86154
86123
86355
86140
86110
86112
85281WK
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
86341
86112
89003
86899
86810
86115
86111
89003
86899
86810
86115
86111
Page 11
115 & 250 Series Coffee Grinders
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Exploded View Parts List - 115V (cont.)
Models 115A, 115AB, 250, 250A, 250AB & 250-3A
Item No. Description
115A
115AB
250
250A
250AB
250-3A
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
NUT, 1/4-20 X 7/16 HEX JAM ZINC PLATED
WASHER, FLAT 1/4 - ZINC PLATED
SPRING, TENSION
86892
86824
86118
86114
86089
86073-01
89116
86048
86853
86116
86810
86107
86807
89116
86887
86007
86892
86824
86118
86114
86089
86073-01
89116
86048
86853
86116
86810
86107
86807
89116
86887
86006
86075
86075
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86012K
86618
86222
86071
86859
86003
87032K
86995
86812
SHIFT, ARM
SCREW, 1/4-20 X 3/4 THUMB ZINC
SOLENOID, GRIND SHIFT 120V 60HZ
SCREW, #8 X 1/4 PH TR HD SMS T/B 410 SS
HARNESS, SOLENOID
PIN, COTTER 3/32 X 1 ZINC PLATED
BRACKET, SOLENOID MTG
NUT, 8-32 KEPS ZINC PLATED
ASSEMBLY, GRIND SHIFT HINGE A225-28-1
SCREW, 8-32 X 3/8 SL BD HD M/S ZINC
SCREW, #8 X 1/4 PH TR HD SMS T/B 410 SS
SCREW, 5/16-18 X 1 SL FIL HD M/S
PLATE, FRONT
SWITCH, DECAF / REGULAR ROCKER
SWITCH,PORTION ROCKER
SWITCH, ROCKER START
CAPACITOR, 115V W/ BRACKET
SCREW, 8-32 X 1/2
89116
86007
89116
89116
89116
86007
86075
86006
86075
86075
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86012K
86618
86222
86071
86859
86003
87032K
86995
86812
86006
86075
83231
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86012K
86618
86075
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86011K
86618
86222
86071
86859
86003
87032K
86995
86812
86075
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86011K
86618
86222
86071
86859
86003
87032K
86995
86812
83339
86144
86808
86146
86235
86148
86220
83105
61266
86218
86217
86038
86872
86039
86138
86508
87049
87026
71014
71013
87024
87025
86012K
86618
86222
86071
86859
86003
87032K
86995
86812
SPRING, CHAFF MIXER
SPRING, W/ CHAFF SUPPRESSION
SCREW, 4-40 X 1/4 PH PN HD ZINC
DEFLECTOR
GASKET, HOPPER FUNNEL
STANDOFF, REVERSE EDGEMOUNT
SPOUT
SCREW, 8-32 X 3/8 PH RD HD
BRACKET, CONTROL BOARD
BOLT, 1/4-20 HX HD
BUSHING, HEYCO OPEN / CLOSED
DIGITAL, TIMER
SPRING, BASKET ARM
NUT, WHIZLOCK 1/4-20
SPACER
ARM, BASKET LEFT
ARM, BASKET RIGHT
SCREW, 5/16 X 1 HEX SOC SHLDR
SPACER
CASING
CIRCUIT BREAKER, 10A
POWER CORD, 115VAC
STRAIN RELIEF
SCREW, #10 X 1/2 PH TR HD T/AB 410 SS
PLATE, LOWER FRONT
PLATE, SAFETY SHIELD
87032K
MOTOR MOUNT ASSEMBLY
SCREW, 10-32 X 5/16 SL BD HD M/S ZINC
115 & 250 Series Coffee Grinders
Page 12
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Exploded View Parts List - 230V
Models 115A, 115AB, 250, 250A, 250AB & 250-3A
Item No. Description
115A
115AB
250
250A
250AB
250-3A
1
2
3
4
5
6
7
HARNESS, 115/250 A & AB
86037
86037
86037
86125
86121
86034
86309
88862
89103
86037
86125
86117
86034
86309
88862
89103
86037
86125
86117
86034
86309
88862
89103
86037
86125
86117
86034
86309
88862
89103
HARNESS, 250 SERIES DIGITAL AUGER
HARNESS, DIGITAL SWITCH
FOOT, RUBBER 100/250
BASE
ANGLE BRACKET, GRINDER BASE
250 LID ASSEMBLY
86122
86034
86309
88862
86122
86034
86309
88862
8
9
SCREW, #8 X 3/8 PH PN SMS T/B 410 SS
LID, BACK SS
SCREW, 6-32 X 1/4 PH PN HD
LID, FRONT SS
NUT, 6-32 ACORN LOCK
HINGE, PLATED
PARTITION, HOPPER
SCREW, 8-32 1/2 SL BD HD NYLON
NUT, 8-32 NYLON LOCK
SCREW, #8 X 3/8 PH PN SMS T/B 410 SS
HOPPER
WINDOW, HOPPER
HOPPER, SUPPORT
HOPPER
FRONT HOPPER SUPPORT
GASKET, HOPPER
SCREW, 8-32 X 3/8" HEX PEM
LINK, DRIVE
WASHER, NYLON
HOPPER, AUGER W/ SPOUT
ADAPTER, DRIVE
SPRING, AUGER
89113
86013
86801
86014
86848
86316
89113
86013
86801
86014
86848
86316
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
86801
86848
86801
86848
86801
86848
86801
86848
86041
86087
86086
86041
86087
86086
86041
86087
86086
86041
86087
86086
89114
86010K
86102
86008
86192
86196K
71419
89114
86010K
86102
86008
86192
86196K
71419
86010K
83152
86010K
83152
86010K
83152
86010K
83152
83143
83368
83141-01
83150
80019
86046
83134
86000
86042-01
83081
86864
86421
82097
84171S
86304
86118
83143
83368
83141-01
83150
80019
86046
83134
86000
86042-01
83081
86864
86421
82097
84171S
86304
86118
83143
83368
83141-01
83150
80019
86046
83134
86000
86042-01
83081
86864
86421
82097
84171S
86304
86118
83143
83368
83141-01
83150
80019
86046
83134
86000
86042-01
83081
86864
86421
82097
84171S
86304
86118
FUNNEL, AUGER
MOTOR, AUGER 230V
BRACKET, MOTOR
GASKET, HOPPER
NUT, TINNERMAN 1/4 - 20
MOTOR, 1/2HP 230V 50 HZ
SCREW, 8-32 X 3/8 PH TR HD M/S 410 SS
HEAD, GRIND
COLLAR, THRUST
SPRING, TENSION
BURR (SET)
SCREW, #10-32 X 5/16
FEEDWORM
DRIVE, SHEAR
SHEAR DISC
86864
86421
82097
84171S
86304
86118
85281W
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
86864
86421
82097
84171S
86304
86118
85281W
86812
85185T
86154
86123
86355
85281W
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
85281W
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
85281W
86812
85185T
86154
86123
86355
85281W
86812
85185T
86154
86123
86355
86140
86341
87131
86340
86819
COVER, SHEAR
BEARING, ADJUSTING
GRIND, ADJUST PIN
86110
86112
86340
86819
89005
61305
86810
86115
86111
86110
86112
86340
86819
89005
61305
86810
86115
86111
GRIND, CAP
NUT, 5/8-18 BRASS ADJUST SCREW
SCREW, 5/16-18 X 1 THUMB T/S ZINC
GRIND SHIFT ASSEMBLY 230VAC
SCREW, 8-32 X 5/8 PH TR M/S ZINC
NUT, 8-32 KEPS ZINC PLATED
BRACKET, COARSE STOP
SCREW, GRIND ADJUST 5/8-18 X 3/8
Page 13
115 & 250 Series Coffee Grinders
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Exploded View Parts List - 230V (cont.)
Models 115A, 115AB, 250, 250A, 250AB & 250-3A
Item No. Description
115A
115AB
250
250A
250AB
250-3A
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77A
77
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
NUT, 1/4-20 X 7/16 HEX JAM ZINC PLATED
WASHER, FLAT 1/4 - ZINC PLATED
SPRING, TENSION
86892
86824
86118
86114
86089
86534-02K
89116
86048
86853
86116
86810
86107
86809
89116
86819
86007
86892
86824
86118
86114
86089
86534-02K
89116
86048
86853
86116
86810
86107
86809
89116
86819
86006
86075
86075
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86012K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
SHIFT, ARM
SCREW, 1/4-20 X 3/4 THUMB ZINC
SOLENOID, GRIND SHIFT 230V 50HZ
SCREW, #8 X 1/4 PH TR HD SMS T/B 410 SS
HARNESS, SOLENOID
PIN, COTTER 3/32 X 1 ZINC PLATED
BRACKET, SOLENOID MTG
NUT, 8-32 KEPS ZINC PLATED
ASSEMBLY, GRIND SHIFT HINGE A225-28-1
SCREW, 8-32 X 1/2 PH TR ZINC
SCREW, #8 X 1/4 PH TR HD SMS T/B 410 SS
SCREW, 5/16-18 X 1 SL FIL HD M/S
PLATE, FRONT
SWITCH, DECAF / REGULAR ROCKER
SWITCH,PORTION ROCKER
SWITCH, ROCKER START
CAPACITOR, 230V W/ BRACKET
SCREW, 8-32 X 1/2
89116
86853
89116
86853
89116
86853
89116
86853
89116
86007
89116
89116
89116
86007
86075
86006
86075
86075
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86012K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
86006
86075
83231
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86012K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
86075
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86011K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
86075
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86011K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
70445
86179
86808
86141
86146
86235
86148
86220
71419
61266
86218
86217
86038
86872
86039
86139
86508
87049
87026
71014
71013
87024
87025
86012K
83107
61453
86071
82097
86003
87032K
86995
86812
86822
SPRING
SPRING, CHAFF MIXER
SPRING, W/ CHAFF SUPPRESSION
SCREW, 4-40 X 1/4 PH PN HD ZINC
DEFLECTOR
GASKET, PROPORTIONER TO HEAD
STANDOFF, REVERSE EDGEMOUNT
SPOUT
SCREW, 8-32 X 3/8 PH RD HD
BRACKET, CONTROL BOARD
BOLT, 1/4-20 HX HD
BUSHING, HEYCO OPEN / CLOSED
DIGITAL, TIMER
SPRING, BASKET ARM
NUT, WHIZLOCK 1/4-20
SPACER
ARM, BASKET LEFT
ARM, BASKET RIGHT
SCREW, 5/16 X 1 HEX SOC SHLDR
SPACER
CASING
CIRCUIT BREAKER, 5A
POWER CORD, 1.5MM CE
STRAIN RELIEF
SCREW, 8-32 X 3/8 PH T/H 410SS
PLATE, LOWER FRONT
PLATE, SAFETY SHIELD
MOTOR MOUNT ASSEMBLY
SCREW, 10-32 X 5/16 SL BD HD M/S ZINC
WASHER, LCK #8 INT ZNC PLTD
115 & 250 Series Coffee Grinders
Page 14
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Models 250RH-2 and 250RH-3 Exploded View
Page 15
115 & 250 Series Coffee Grinders
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Models 250RH-2 and 250RH-3 Removable Hopper Exploded View
Models 250RH-2 and 250RH-3 Casing Assembly Exploded View
115 & 250 Series Coffee Grinders
Page 16
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Models 250RH-2 and 250RH-3 Digital Timer Assembly Exploded View
Models 250RH-2 and 250RH-3 Front Plate Assembly Exploded View
Page 17
115 & 250 Series Coffee Grinders
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Models 250RH-2 and 250RH-3 Motor Mount Assembly (120V)
Exploded View
Models 250RH-2 and 250RH-3 Auger Motor Mount Assembly
Exploded View
115 & 250 Series Coffee Grinders
Page 18
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Models 250RH-2 and 250RH-3 Wiring Diagram
Page 19
115 & 250 Series Coffee Grinders
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115A, 115AB & 250 Series Wiring Diagram 115V
115 & 250 Series Coffee Grinders
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115A &115AB/120V Wiring Diagram
Page 21
115 & 250 Series Coffee Grinders
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115A &115AB/120V Wiring Diagram
115 & 250 Series Coffee Grinders
Page 22
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Grindmaster® Coffee Grinders and Brewers • PrecisionBrew™ Brewing Systems • Espressimo® Espresso Machines
Crathco® Hot Beverage Dispensers • Crathco® Cold and Frozen Beverage Dispensers • AMW Coffee and Tea Systems
Tel (502) 425-4776 • Fax (502) 425-4664 • 1-800-695-4500 (USA & Canada only)
P.O. Box 35020 • Louisville, KY 40232 • USA
© Grindmaster Corporation™, 1998
PRINTED IN USA
0108 Form # GR-373-04
Part # 85358
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